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AssignmentMultiple Choice

Atomic Theory

Question 1 • FL-2002110-M/J Comprehensive Science 3 Advanced A - Flex

What ion is formed when an atom of mercury (Hg) loses two electrons?

Answer
A
Hg–1
B
Hg–2
C
Hg+1
D
Hg+2

Explanation

Losing electrons leaves an atom with more protons than electrons, so it becomes positively charged. Mercury loses two electrons, giving it a charge of +2; the ion is Hg²⁺, choice D.

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